Actually, peridot has been implied to be quite resilient, think of all the beatings she took when they first found her in the main kindergarten; she fell multiple stories, was crushed multiple times, but she still got away. She didnt even poof until garnet amethyst and pearl worked together to squeeze her with all…

Did no one else get the Contact reference?? The whole thing with the dissappearing floor and the mental projection, thats right from that movie/book!